Cylinder-head fastener.



- W. H. MILLSPAUGH. CYLINDER. HEAD PASTENER. APPLICATION FILED $1311.16, 1912.

Patented Apr. 14, 19M

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ATTORNEY To all whom it may concern WILLIAM H. MIL'LSPAUGH, 0F SANDUSKY, OHIO.

UYLINDEIt-HEAI) FASTENER.

messes.

Specification of Letters Patent.

Patented Apr. 1%, 191 1.

Application filed January 16, 1912. Serial No. 671,458.

tion and arrangement of parts for attaching heads or ends to cylinders and its object is to provide a simple arrangement for fasted.

i to the construction of drier-rolls Like characters similar parts in all 4 is a detail of view of a portion of the drier roll through the passage ing such heads or ends to cylindrical shells which have no projecting flanges.

As this invention is peculiarly adaptable such as form parts of a paper-making apparatus I will describe such a mechanism embodying my invention for the purpose of illustrating one of its uses.

Referring to the drawings, Figure 1 is a side elevation of a drier roll mounted in position showing my improved arrangement for fastening the drum. heads in position. F ig; 2 is a sectional end view of the same,

I the section being taken on thedine 2-2 of Fig. 1 looking in the direction of the arrows.

3 is a detail view of construction showing a retaining bolt in thcposition it as sumcs when the partsare assembled. Fig. construction showing the same parts drawn together with retaining bolt in holding position. Fig. 5 is a section on the line 5-5 Fig.3 showing holes for a set-screw and one of the retaining bolts, Fig. 6 is a section on the line 66 Fig. 3 showing the Ushaped form of the bolt hole at this section. Fig. 7 is a plan cylinder and one of the heads.

of reference designate the figures.

1O doslgnatcs the cylindrical shell of a drier roll to the opposite ends of which are secured drum or cylinder heads 11 and 12, which are formed with outwardly projecting trunnions 11 and 12 which are rotatably mounted in bearings 13 of standard 14. A driven shaft 15 is secured to the head 11, by means of which the drier roll may be revolved in the usual manner. Steam is admitted through a pipe 20 to a rom whence it passes to the interior of the 22 formed in the recesses and shows its steam box 21 the trunnion 12 The steam box 21 is forced against the trunnion 12 by a compression spring 23, forming a joint which allows revolution of the drier-roll and prevents escape of steam at the gasket, which is interposed between the steam box and the face of the trunnion. The compression spring 23 abuts against a stationary member 24 which is a part of anarm 25 projecting from the standard 14. The exhaust steam and the entrained water of condensation in the drier-roll are carried off by the exhaust pipe 26, eitherby means of a suction pump or the pressure of the steam within the roll.

Such of the parts as have been described are common and well known. I will now proceed to set forth and describe my arrangement of parts for retaining the drum heads rigidly inplace, whereby steam within 'the'roll has ready access to all parts of a shell for drying the paper. The drum heads 11 and 12 are formed with a series of inwardly projectingrlugs 30. The outside diameter of the lug circle may be equal to thc'inside diameter of the shell 10. These drum. heads are recessed inwardly at the periphery to form a section 31 of a thickness less than that of the drum head, and of a depth equal to the thickness of the shell 10, The section 31 is further recessed at the periphery ts at 33 to engage the annular shoulder/34E formed by the recess 35 in the shell 1Q: This recess 35 is adapted to receive the portion 36 of the section 31. The section 31 is bored and threaded, at intervals, as at 37 to receive set-screws adapted to butt against the recessed portion 35 of the shell 10, for the purpose of removing the head, as will be more fully described hereinafter.

The shell 10 is preferably a plain hollow cylinder with no internal projections, such as may be conveniently cast in a centrifugal molding apparatus such as that described in my copending application for patent, Serial No. 621,997. filed April 19, 1911. This is provided at each end with a series of recesses 40 as best seen by reference to Figs. 3 and 7. The former figure is a sectional side elevation of a portion of the shell through one of curved contour ll and inclined face 42, while Fig. 7 is a plan view which shows its shape as viewed from the top.

The clampingor retaining bolts50 are of a peculiar structure, and comprise the ordinary threaded shank with a head sha ed to fit the recess 40 above described. eferring to Fig. 3 it may be seen that the bolt head is formed with a fiat surface 51 in line with one side of the threaded shank and with parallel sides 52 at right angles thereto which leave the side 51 with a width equal to the diameter of the shank. From the efid of the shank a lip 53 projects preferably at an angle inclined to the axis of the shank and the fourth side 53 curves over from the outer edge of this lip to the surface 51. The angle of the lip 53 is the same as that of the face 42 of the recess which it is adapted to engage in a manner which will be described.

One of the bolts and its corres onding recess are shown in Fig. 7 from which it may be seen that the end of the recess nearest the head 12 is rectangular so that the bolt head may fit thereon. The other end of the recess is cut away as at 41 to allow room to plear the bolt head when the bolt is opposite this part and when the bolt is turned over about the axis of its shank. At the end of the shank 50, a small slot 54 is cut adapted toi'eceive a screw driver or other simllar device. A nut 55 is adapted to enga-ge the end of the threaded shank of the bolt and 56 is a Washer interposed between this nut and the drum head.

Referring to Figs, 5 and 6 it is seen that the hole at the section on the line 55 for the shank of the bolt 50 is circular whereas at the section on the line 6-6 it is U-shaped. Neither of these holes are threaded.

In assembling the shell and'heads of a drier roll constructed as I have described, the bolts 50 are placed in the drum heads with their flat surfaces 51, of the heads outward as shown in Fig. 3', when the lugs 30 are inserted in the shell. Red lead, or a similar joint-making substance is placed in the recesses 35. Then the bolts are given a half turn by means of a screw driver so that the lips 53 will project outward into the recesses 40. Thebead may now be drawn to the shell by'turning the nut 55 on the bolt, which will be held from turning because the flat surfaces will rest on the ends of the lugs 30 until the bolt heads are drawn into the rectangular portions of the Further movement of the nuts on ,the threaded shanks will cause the drum :liead and the shell to be drawn together #tl'ghtly as they are shown in Figs. 1 and 4.

,flh outside of the ell and its heads may then be machined to form a true cylinder. The red lead in the recesses 35 make" steamtight joints where the shell and its heads come together. In order to remove the heads from the shell, the nuts 55 and washroll of a paper making machine, I do not intend to limit myself to this particular use, as it will readily be seen that this form of retaining device may be advantageously used in many different connections, and in many types of machinery.

What I claim is:

The combination with a cylindrical shell provided with recesses formed in thebody of the shell on the inside near the ends thereof, said recesses being formed with parallel sides, an outwardly inclined end and a curved bottom beginning at said inclined end and terminating in the surface of said shell at the inner ends of said parallel sides, said shell having a portion of its ends cut away to form a step extending completely around said shell, of heads having lugs provided with U-shaped holes oppositely disposed around a circle of a diameter less than that of the heads and equal approximately to the inside diameter of said shell, the said heads being provided with holes in alinement with said U-shaped holes in said lugs and being further provided with a steplextending around the periphery thereof adapted to engage the first mentioned step on said shell, means for retaining said heads in rigid position at the ends of said shell, said means comprising bolts,

WILLIAM H, MILLSPAUGH.

Witnesses:

C. L. MIELKE, W. J. BENTEL. 

